The chemical behaviour of actinium is similar to that of the rare earths, particularly lanthanum. From LearnThat.org. [http://www.webelements.com/actinium/]
Hahn's radiothorium and actinium salts also followed him to Emil Fischer's laboratory in Berlin. 30. From Wordnik.com. [Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna] Reference
In France, Debierne had discovered actinium and Giesel claimed to have found a different element, emanium. From Wordnik.com. [Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna] Reference
However, this new series of closely associated elements does not begin with uranium 92, but with actinium 89. From Wordnik.com. [Nobel Prize in Chemistry 1951 - Presentation Speech] Reference
M. and Mme. Curie, radium was also discovered by them in collaboration with Bémont, and actinium by Debierne. From Wordnik.com. [Nobel Prize in Physics 1903 - Presentation Speech] Reference
Professor Meitner in 1918, and discovered protactinium, the long-lived mother substance of the actinium series. From Wordnik.com. [Otto Hahn - Biography] Reference
This is true also of the two other elements found in the ores of uranium and thorium, viz., polonium and actinium. From Wordnik.com. [Marvels of Modern Science] Reference
This at once offered an explanation of the fact observed by Debierne that actinium as well as radium produced helium. From Wordnik.com. [Ernest Rutherford - Nobel Lecture] Reference
Certain metals had this property to a remarkable degree, particularly uranium, thorium, polonium, actinium, and others, and in 1898 the. From Wordnik.com. [Electricity for Boys] Reference
In collaboration with Rona, she applied her method to the study of the ranges of alpha particles emitted from actinium and polonium. 6 7. From Wordnik.com. [Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna] Reference
The lead that comes from the uranium has 124 neutrons in the nucleus, that which comes from thorium has 126 and that which comes from actinium has 125. From Wordnik.com. [Nobel Prize in Physics 1938 - Presentation Speech] Reference
The names thus given soon came into general use as a convenient nomenclature for the three distinct types of radiation emitted from uranium, radium, thorium, and actinium. From Wordnik.com. [Ernest Rutherford - Nobel Lecture] Reference
In the course of a long series of experiments, I proved that the a-particles, whether expelled from radium, thorium or actinium, were identical in mass and must consist of the same kind of matter. From Wordnik.com. [Ernest Rutherford - Nobel Lecture] Reference
On the other hand, Bronson has drawn attention to certain cases, viz. the emanations of actinium and of thorium, where apparently two and three atoms of helium respectively are expelled at one time. From Wordnik.com. [Ernest Rutherford - Nobel Lecture] Reference
The actinium is present in negligibly small amounts. From Wordnik.com. [The Birth-Time of the World and Other Scientific Essays] Reference
The absence of actinium haloes clearly supports this view. From Wordnik.com. [The Birth-Time of the World and Other Scientific Essays] Reference
Herbal remedies like actinium and brand products such as Cellex-c. From Wordnik.com. [PRWeb - Daily News Feed] Reference
It is likely that the actinium series is related to that of radium. From Wordnik.com. [Radium And The New Concepts In Chemistry: Nobel Lecture] Reference
The unstable radium decays, gives off radiation, and changes to actinium. From Wordnik.com. [Recently Uploaded Slideshows] Reference
(Geschäftsführer actinium consulting, im Bild): Nicht nur die Teilnahme an. From Wordnik.com. [Megite Technology News: What's Happening Right Now] Reference
For if actinium was an independent element we would be sure to find actinium haloes. From Wordnik.com. [The Birth-Time of the World and Other Scientific Essays] Reference
Uranium certainly is; thorium -- the stuff of this incandescent gas mantle -- certainly is; actinium. From Wordnik.com. [The World Set Free] Reference
Debierne has obtained a third radioactive substance from pitchblende, which he has called "actinium.". From Wordnik.com. [Alchemy: Ancient and Modern] Reference
By bombarding thorium with neutrons, activities are which have been ascribed to radium and actinium isotopes8. From Wordnik.com. [Disintegration of Uranium by Neutrons~ a New Type of Nuclear Reaction (historical)] Reference
On Rutherford's theory then, actinium should always accompany uranium and radium, but in very subordinate amount. From Wordnik.com. [The Birth-Time of the World and Other Scientific Essays] Reference
Many having other radio-elements are known already, the polonium, the mesothorium, the radiothorium, the actinium. From Wordnik.com. [On the Discovery of Radium] Reference
Other radioactive elements have been discovered since: actinium (Debierne), radiothorium and mesothorium (Hahn), ionium (Boltwood), etc. From Wordnik.com. [Radium And The New Concepts In Chemistry: Nobel Lecture] Reference
Debierne worked with Marie Curie and discovered actinium in pitchblende (uranium ore) from which radium and polonium had already been extracted. From Wordnik.com. [Recently Uploaded Slideshows] Reference
ReadyBlog: Herr Zeiler, die Microsoft BI Konferenz findet dieses Jahr zum dritten Mal statt und Sie waren mit actinium consulting immer mit dabei. From Wordnik.com. [Megite Technology News: What's Happening Right Now] Reference
When actinium decays, it produces a series of daughter atoms, each of which gives off its own alpha particle, increasing the chances that the cancer cell will be destroyed. From Wordnik.com. [Health News from Medical News Today] Reference
If, on the other hand, actinium was always associated with uranium and radium, then its effects would be submerged in those of the much more potent effects of the uranium series of elements. From Wordnik.com. [The Birth-Time of the World and Other Scientific Essays] Reference
Radium, uranium, thorium, actinium -- all the radioactive elements -- are, as everybody knows, continually disintegrating, discharging the enormous energy that is imprisoned in their molecules. From Wordnik.com. [The Man Who Rocked the Earth] Reference
Sherlock Holmes S - actinium http://www. scifi.com/scifiction/elements/actinium. html. From Wordnik.com. [Archive 2007-09-01] Reference
The same may be said of actinium. From Wordnik.com. [Marvels of Modern Science] Reference
For why not find an actinium halo?. From Wordnik.com. [The Birth-Time of the World and Other Scientific Essays] Reference
He discovered the element actinium. From Wordnik.com. [Pierre Curie] Reference
Like an actinium torchlight. From Wordnik.com. [The Lensman's Children] Reference
(uranium series) and 4n + 3 (actinium series). From Wordnik.com. [Nobel Prize in Chemistry 1951 - Presentation Speech] Reference
There's yttrium, ytterbium, actinium, rubidium. From Wordnik.com. [Qulog 2.0] Reference
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